Carry engine coolant to and from the heater core with the Dorman heater hose assembly, part number 626-110 from Dorman - OE Solutions, a direct replacement for the original heater hose. It fits many vehicles, among them the 2001-2004 Chevrolet Silverado 2500 HD, 2001-2004 Chevrolet Silverado 3500 and 2001-2004 GMC Sierra 2500 HD. See the "Vehicles it fits" section for the full list and engine details.
Dorman built this hvac heater hose assembly to fit and hold up like the stock unit. It is designed to withstand extreme temperature changes, which helps extend its service life.
- Ideal replacement: Directly replaces the original heater hose on the listed applications.
- Durable construction: Specifically designed to withstand extreme temperature changes and to resist cracking and leaking.
- Cost-effective and reliable: Offers original manufacturer quality at a lower cost than a dealer replacement.
- Industry-leading design: Professionally engineered by the aftermarket leader in heater hose assemblies.
A heater hose may need replacing if it is cracked, swollen, soft or seeping coolant. Other signs can include a sweet coolant smell, a dropping coolant level or weak cabin heat. Diagnose the cause before replacing the hose, since leaks and heating complaints can have other sources.
Interchange: 86121 · 18969 · 15768212
Frequently Asked Questions
What does a Dorman heater hose do?
It carries engine coolant between the engine and the heater core so the HVAC system can supply cabin heat. The 626-110 assembly directly replaces the original heater hose on the listed applications.
Which trucks does this heater hose assembly fit?
It fits many vehicles, among them the 2001-2004 Chevrolet Silverado 2500 HD, 2001-2004 Chevrolet Silverado 3500 and 2001-2004 GMC Sierra 2500 HD. See the "Vehicles it fits" section for the full list and engine details.
What are signs my heater hose may need replacing?
Signs include cracks, swelling, a soft feel, coolant seepage, a sweet coolant smell or weak cabin heat. Confirm the cause first, since other parts can produce similar symptoms.
How is the 626-110 built to last?
Dorman designed it to withstand extreme temperature changes and to resist cracking and leaking, which helps extend its service life.
How is this heater hose installed?
Installation typically involves draining some coolant, swapping the hose, then refilling and bleeding the cooling system. Follow the vehicle service information for the correct procedure and coolant type.
